Sound barrier for highways

Abstract

The invention provides a sound barrier for highways. The sound barrier comprises a plurality of uprights and sound barrier units disposed between the uprights, the uprights are of an H-shaped structure and the tops of the uprights are in an arc shape. Inserting slots are formed in both sides of the uprights, the sound barrier unit is disposed between the two corresponding uprights, the left end ofthe corresponding sound barrier unit is connected into the right inserting slot of the left upright in a clamped mode and is in flexible connection with nuts through a plurality of bolts; and the right end of the sound barrier unit is connected into the left inserting slot of the right upright and is in flexible connection with nuts through a plurality of bolts. The construction difficulty is reduced, transportation is convenient, during installing, the uprights are firstly installed on a foundation, then a lower composite sound insulation board, a middle layer composite sound insulation board and a top layer composite sound insulation board of the corresponding sound barrier unit are sequentially installed between the two uprights, and the lower composite sound insulation board, the middle layer composite sound insulation board and the top layer composite sound insulation are spliced to each another; and connection is stable by cooperate splicing of grooves and protrusions, and noiseabsorption and sound insulation are combined to realize a good effect of sound reduction and sound insulation.

Description

technical field [0001] The invention relates to the technical field of road noise processing, in particular to a sound barrier for expressways. Background technique [0002] The sound barrier is a structure installed on both sides of the road or railway that can effectively isolate and eliminate the noise generated by high-speed trains and cars. The sound barrier is a plug-in structure composed of H-shaped steel columns and unit panels. The sound barrier consists of a number of steel columns with an interval of 200-400 cm arranged alternately along the road, and a 50-100 cm wide sound barrier unit plate is inserted between the H-shaped steel columns to form a sound barrier for noise prevention on both sides of the road. [0003] When a sound wave encounters a sound barrier during propagation, a part is reflected, a part is consumed, a part is diffracted and a part is transmitted. The existing sound barrier usually uses a layer of dense material as the sound insulation layer...

AI Technical Summary

Problems solved by technology

[0003] When a sound wave encounters a sound barrier during propagation, a part is reflected, a part is consumed, a part is diffracted and a part is transmitted. The existing sound barrier usually uses a layer of dense material as the sound insulation layer, and the noise reduction method is single, and the noise reduction effect not obvious

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